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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Coloured cylinder mark for gases
Standard published on 24.2.2016
Selected format:Methods of sampling and sample preparation ofantimony ores in bags
Standard published on 30.12.1986
Selected format:Directly heated positive step-function temperature coefficient thermistors--Part 1:Generic specification
Standard published on 18.7.2002
Selected format:Thermistors--Directly heated positive step-function temperature coefficient--Part 1-1:Blank detail specification for current limiting application--Assessment level EZ
Standard published on 17.1.2003
Selected format:Thermistors--Directly heated positive step-function temperature coefficient--Part 1-2: Blank detail specification--Heating element application--Assessment level EZ
Standard published on 24.1.2003
Selected format:-
Standard published on 7.1.1987
Selected format:Thermistors--Directly heated positive step-function temperature coefficient--Part 1-3: Blank detail specification--Inrush current application--Assessment level EZ
Standard published on 24.1.2003
Selected format:Thermistors--Directly heated positive step-function temperature coefficient--Part 1-4: Blank detail specification--Sensing application--Assessment level EZ
Standard published on 24.1.2003
Selected format:Codes and identification of secret level for documents
Standard published on 25.7.2003
Selected format:Electric soldering irons and heating guns
Standard published on 30.8.2019
Selected format:Latest update: 2026-08-04 (Number of items: 2 291 378)
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